Muffler



July 148, 1944. CORTEZ ET AL 2,353,998v

` MUFFLER Filed Nov. 7, 1942 l 3 Sheets-Sheet l Xi l 1 l mi i l 2K N 5 m lll/'cular `}uly 18, 1944. D. CORTEZ ET AL 2,353g998 MUFFLER Filed Nov. 7, 1942 3 Sheets-Sheet 2 I 1 10 l ju) fir July 1s, 1944.

D. COREZ ET AL 2,353,998

MUFFLER Filed Nov. 7, 1942 3 Sheets-Sheet 3 WWW Patented July 18, 1944 FFICE MUFFLER Daniel Cortez, Washington, and Charles Paternoster, Duquesne, Pa.

Application November 7, 1942, Serial No. 464,870 3 Claims. (Cl. 181-64) The present invention relates to new and useful improvements in muiiiers for internal combustion engines, particularly those used in power aircraft.

The primary object of the invention is to provide, in a manner as hereinafter set forth, a muffler comprising a novel construction and arrangement for silencing the exhaust of the engine without creating excessive back pressure thereon.

Other objects of the invention are to provide an internal combustion engine mul'lier, or silencer, which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, compact, and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a view in side elevation of a muffler constructed in accordance with the present invention.

Figure 2 is a plan View thereof.

Figure 3 is a view in vertical longitudinal section through the device, taken substantially on the line 3 3 of Figure 2.

Figure 4 is a cross sectional view, taken substantially on the line 4-4 of Figure 3.

Figure 5 is a view in rear elevation of the device.

Figure 6 is a cross sectional view through the muffler.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises an elongated, horizontal cylindrical casing I of suitable dimensions and material. The casing I includes substantially concavo convex end closures or caps 2.

Partitions 3 are mounted in the casing I at longitudinally spaced points. The partitions 3 define a series of circular compartments or chambers 4 in the casing I.

Mounted in the center compartment 4 is a suitable electric motor 5. Supporting arms or brackets 6 are provided for the electric motor 5. The partitions 3 between which the motor 5 is mounted are insulated to protect said motor from excessive heat.

Longitudinal shafts 'I are journaled in sealed bearings 8 which are provided therefor in the partitions 3 and operatively connected to the electric motor 5. The shafts 'I extend centrally through the circular chambers 4.

Rotors 9 are mounted on the shafts I for operation in the chambers 4. The rotors 9 include hubs I0 which are removably secured on the shafts l. Substantially fan-shaped blades I I radiate from the hubs I0.

Communicating with the chambers 4 on diametrically opposite sides thereof are intake and exhaust manifolds I2 and I3, respectively. The intake manifold I 2 communicates with each of the chambers 4 through a pair of branches I4 for distributing the gases uniformly in said chambers on the rotors 9. Baflles I5 direct the exhaust gases into the branches I4. The exhaust manifold I3 communicates with each of the chambers 9 through a single, comparatively large branch I6. At a point forwardly of the casing I, the manifold I2 is provided with a cut-out I1. The various parts may be secured together by any suitable well known means, such as welding, boltlng, riveting or the like.

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. Briefly, the electric motor 5 is energized from any suitable source of current for actuating the rotors 9 in the chambers 4. The exhaust gases from the engine, entering the chambers 4, strike the blades II of the rapidly turning rotors 9 and are thoroughly broken up thereby. The broken up exhaust gases are retarded sufficiently by the rotors 9 to cause them to Iiow from the chambers 4 in steady, uniform streams into the exhaust manifold I3 from which they are discharged to the atmosphere. The electric motor 5 may be controlled in any suitable manner.

It is believed that the many advantages of an internal combustion engine mutller or silencer constructed in accordance with the present invention will be readily understood, and although a. preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. A muliler comprising a cylinder, transverse partitions dividing the cylinder into a series of chambers, intake and exhaust manifolds communicating with all but one of the chambers, an electric motor operable in said one of the chambers, and rotors operable in the remaining chambers and operatively connected to said motor for actuation thereby.

2. A mufer of the character described comprising a cylindrical casing, transverse partitions dividing the cylindrical casing into a series of circular chambers, diametrically opposite intake and exhaust manifolds communicating with al1 but an intermediate one of the chambers, an electric motor mounted in said intermediate chamber, shafts journaled longitudinally in the chambers and operatively connected to said motor, and fan rotors ixed on said shafts and operable in the chambers.

3. An engine muffler of the character described comprising an elongated cylindrical casing, caps, closing the ends of said casing, parti tions mounted in the casing at longitudinally spaced points, said partitions providing a series of circular chambers in the casing, sealed bearings mounted in the partitions, an electric motor mounted in an intermediate chamber, shafts journaled in the bearings and operatively connected to the motor, fan rotors mounted on the shafts for operation in the remaining chambers, said rotors including hubs fixed on the shafts and substantially fan-shaped blades radiating from said hubs, an intake manifold including a plurality of branches communicating with each of said remaining chambers, and an exhaust manifold communicating with said remaining chambers at diametrically opposite points from the branches of the intake manifold.

DANIEL CORTEZ.

CHARLES PATERNOSTER. 

